Provide different implementation for a delegate - CSharp Custom Type

CSharp examples for Custom Type:delegate

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Description

Provide different implementation for a delegate

Demo Code

using System;//from  www.j  a v  a 2  s .c om
using System.IO;

public delegate void printString(string s);
      
   class PrintString {
      static FileStream fs;
      static StreamWriter sw;

      public static void WriteToScreen(string str) {
         Console.WriteLine("The String is: {0}", str);
      }
      
      public static void WriteToFile(string s) {
         fs = new FileStream("c:\\a\\message.txt",
         FileMode.Append, FileAccess.Write);
         sw = new StreamWriter(fs);
         sw.WriteLine(s);
         sw.Flush();
         sw.Close();
         fs.Close();
      }
      public static void sendString(printString ps) {
         ps("Hello World");
      }
      
      static void Main(string[] args) {
         printString ps1 = new printString(WriteToScreen);
         printString ps2 = new printString(WriteToFile);
         sendString(ps1);
         sendString(ps2);
      }
   }

Result


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